He joins 'Grimm' alum Russell Hornsby in the pilot from writer David Elliot.

Vincent Kartheiser is back to broadcast.

The Mad Men alum is set to star in Fox's untitled legal drama from David Elliot (Four Brothers) and Empire's Danny Strong.

The project is set at a wrongful conviction firm led by a fierce and fearless female lawyer (uncast) with a hunger for justice. The team reopens investigations, putting their own lives in danger to exonerate the innocent that were "proven" guilty. The lead's motivation comes from her infamous past; as a young adult she was found guilty and later exonerated in a high-profile case in which she became a tabloid sensation and household name. While a hero and a victim to some, her bold and bullish tactics garner her some enemies — one of whom will do anything to see her go down for a crime we know she did not commit. The drama will follow her defending others as she fights to maintain her own innocence.

Kartheiser will star as Bodie Quick, the intrepid, scrappy and endearing investigator for the wrongful conviction firm. The actor joins the previously cast Russell Hornsby (Grimm) in the pilot.

The role brings Kartheiser back to broadcast TV after he played Connor on the Buffy the Vampire Slayer spinoff Angel for a few seasons on the former WB Network. He is best known for playing Pete Campbell on Mad Men. Should the untitled Fox drama pilot move to series, it would be Kartheiser's first regular role since the AMC critical darling signed off in 2015. His recent credits include episodes of Hulu's The Path and Casual. Kartheiser is repped by Paradigm and Untitled.

Elliot penned the script and will executive produce the 20th Century Fox Television project alongside Strong and Stacy Greenberg. Patricia Riggen will exec produce and direct the pilot.

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